What are the four types of atoms?
Atoms are the building blocks of all matter. They are the smallest unit of an element and are composed of positively charged particles called protons and neutrons, which are surrounded by a cloud of negatively charged particles called electrons. There are four types of atoms: metals, non-metals, metall ...als, and metalloids. Metals have a high melting point and are good conductors of electricity, while non-metals have a low melting point and are poor conductors of electricity. Metalloids have properties that are between those of metals and non-metals.